#288598
Closest named color: Teal Blue (#01889F). oklch(57.2% 0.088 214.4), rgb(40, 133, 152).
Aa
Black text reads best on this color (4.89:1).
About this color
#288598 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.088 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.014 away. Black text reads best on it, at 4.89:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.89:1 |
| White text | 4.28:1 |
Values
| HEX | #288598 |
| RGB | rgb(40, 133, 152) |
| HSL | hsl(190, 58%, 38%) |
| OKLCH | oklch(57.2% 0.088 214.4) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #288598 | 4.28:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #288598 | 4.89:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #288598 text on white | 4.28:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #288598 text on black | 4.89:1 | AA | Lc -32.3 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CADDE2
oklch(88.5% 0.022 215.3)
-
Step 300
300
#A4C8D1
oklch(81% 0.04 214.6)
-
Step 400
400
#71ABB9
oklch(70.6% 0.064 214.6)
-
Step 500
500
#4796A8
oklch(63.1% 0.082 214.8)
-
Step 600
600 (this color)
#288598
oklch(57.2% 0.088 214.4)
-
Step 700
700
#116C7D
oklch(49% 0.082 214.4)
-
Step 800
800
#145866
oklch(42.6% 0.068 215)
-
Step 900
900
#1A4953
oklch(37.8% 0.053 214.1)
-
Step 950
950
#112B31
oklch(27.1% 0.034 214.8)
#288598 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #778199 | 0.079 |
| Deuteranopia (no green cones) | #687598 | 0.072 |
| Tritanopia (no blue cones) | #008C8B | 0.036 |
| Achromatopsia (no color) | #7A7A7A | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288598
#288598
oklch(57.2% 0.088 214.4)
- #A56454
#A56454
oklch(57.1% 0.088 34.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #288598, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.014
- Dark Cyan #008B8B ΔE 0.034
- Ocean #017B92 ΔE 0.035
- Cerulean #457B9D ΔE 0.037
- Blue NCS #118AB2 ΔE 0.039
- Teal #008080 ΔE 0.042
- Stormy Blue #507B9C ΔE 0.043
- Teal Green #0A9396 ΔE 0.043
Use #288598 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.